.visibleLi{display: visible;}
.invisibleLi{display: none;}
.menuExamples {text-align: center}
.menuExamples li{display: inline-block; padding: 5px; background-color: #EEEEEE;}
h1 {text-align: center; font-size: 40px;}
h3 {font-weight: normal; font-size: 20px;}